Horizontal rotary engine or pump.



J. NIELSEN. HORIZONTAL ROTARY ENGINE 0R PUMP.

APPLIOATIOH FILED DEO.17, 1912.

1,088,836. Patented Mar.3,1914

4 BHBETB-BEEET 1.

W/TESSES J. NIBLSBN. l HORIZONTAL ROTARY ENGINE 0R PUMP. APPLICATION FILED 110.1'1, 1912.

1,088,836. `Patented Mar. 3, 1914.

4 BHEBTSBHEBT 2.

[NVE N7 UR fil/army' l J. NIBLSBN. HORIZONTAL ROTARY ENGINE 0R PUMP. I APPLICATION FILED DBO. 17, 1912. 1,088,836, Patented Mar. 3, 1914.

4 sums-ausm a,

WITNESSES J. NIELSEN. HORIZONTAL ROTARY ENGINE on PUMP. AIPLIUATIONy PILED DBO.17. 1912.

1,088,836. Patented Mar.3,1914

4 SHEETS-SHEET 4.

WITNESSES UNITED STATES PATENT OFFICE.

.TENS iarrxnsriv,` or CEDAR FALLS, Iowa.'

HonIzoN'rL ROTARY ENGINE on rum.

p Specification of Letters Patent.

Patented Mar. 3, 1914.

Application led December 17, 1912. Serial No. 737,346.

To all lwhom t may concern.'

Be it known that I, JENs NIEIsEN, a citizen of the United States, residing at Cedar Falls, in the county of Blackhawk and State of Iowa, have invented certain new and useful Improvements in Horizontal Rotary Engines or Pumps, of which the following is a specification.

'lhis invention has relation to horizontal rotary engines or pumps and it consists in the novel features hereinafter pointed out and claimed.

An object of the invention is to provide an engi-ne or pump; the casing of which is primarily deslgned to be positioned with its long dimension horizontal, although it -may -be used in other positions if desired. This casing is provided upon its inner side with a series of teeth of peculiar configuration as will be hereinafter explained. A rotor is journaled in the casing and carries a series of rotatable pistons. These pistons are provided with teeth of peculiar configuration which mesh with the teeth of the casing and serve as means for forcing the liquid through the casing. The parts of the engine or pump are so arranged that the liquid may be forced in either of two directions with equal facility. The casing is provided at its opposlte ends with openings. which may be used as intake or exhaust ports as desired, and upon the rotor is mounted plates having ports which are positioned in predetermlned relation with respect to the pistons. These plates carry vanes which are adapted to encounter the liquid and lead the same through the ports in the plates into the casing so that the liquid is caught up by the teeth of the pistons and is forced through 4the pump.

l their outer end portions and the spaces between the inner end portions of the teeth upon the plstons 1s more than suilcient to receive the inner end portions of the teeth upon the casing.` Therefore ample room 1s provided to permit a certain amount of liquid to remain inactive between the teeth of the two parts to prevent poundingand trapping of the liquid and thereby facilitate the operation of the pump.

lVhile the drawings illustrate the engine or pump as composed of two casings joined together at their ends, and two rotors mounted upon a single shaft journaled in the casings, it will be obvious that a single casing closed at its opposite ends may be employed and a single rotor may be used in the casing.

With these and other objects in View, the invention consists in certain novel features of construction as hereinafter shown and described, and then particularly pointed out in the claims and in the drawings illustrative of the preferred embodiment of the invention.

In the accompanying drawings :-Figure 1 is a side elevation of the engine or pump. Fig. 2 is an end elevation of the same. Fig. 3 is a similar view with one of the heads removed. Fig. 4 is a top plan view of the engine or pump. Fig. 5 is a vertical longituinal.sectional view of the same with the rotors in elevation. Fig. 6 is a vertical longitudinal sectional view of the'same. Fig. 7 is an end view of the engine or pump showing parts removed andillustrates vanes in position at the edges of ports with which the pump is provided. Fig. 8 is a similar view with the vanes removed. Fig. 9 is an enlarged transverse sectional view of the engine or pump. Fig. 10 is a side view of a vane carrying plate used in the engine or pump. Fig. 11 is a side view of a ported plate used inthe engine or pump. Fig. 12 is a view similar to that shown in Fig. 10 with the vanes oppositely disposed. Fig. 13 is a view similanto that shown in Fig. 11 with the ports oppositely arranged. Fig. 14 is a detail. transverse sectional view of the 'rotor of the engine or pump. Fig. 15 is a perspective view of one of the vane carrying plates of the engine or pump.

Corresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawings by the same reference characters.

The engine or pump comprises a casing 1 used for either inlet or outlet ports.

heads 2 are provided with openings 3 which may be connected in any suitable mannei1` with a source of liquid supply. The casing 1 is provided preferably at its side and in the vicinity of one end with an opening 4 for outlet. These openings 3 and 4 mayrpe ie casing 1 is provided upon its inner side with a series of teeth 5. These teeth are broad'- est at their bases or roots and taper gradually toward their inner -ends and convexed at their sides, as most clearly shown in Fig. 9 of the drawings.

A shaft 6 is ournaled for rotation in the heads Qand any suitable means may be employed for rotating the said shaft. A rotor 7 ismounted upon the sha-ft 6 and is provided at its periphery with a series of pockets 8. These pockets are shown as being three in number although a greater or less number of pockets may be employed if desired.

Pla-tes 9 are mounted at the opposite ends of the rotor 7 and the said plates are provided with ports 10 which communicate with the ends of the pockets 8. The ports 10 at one end of the rotor are out of alinement with the ports 10 at the opposite end thereof. These ports are positioned so that the ports at one end of the pockets S are located adjacent one side thereof, while the ports 10 thereof at the opposite ends of the pockets are located adjacent the opposite sides of the pockets.

Shafts 11 are carried by the plates 9 and traverse the lengths of the pockets 8. The said shafts are positioned in the centers of` the pockets. Pistons 12 are journaled upon the shafts 11 and are provided with peripheral teeth 13. These teeth are broadest near their outer end portions and taper gradually toward their inner ends or roots. The teeth 13 are adapted to mesh with the teeth 5 as best shown in Fig. 9 of the drawing. The ports l0 hereinbefore described at one lend of the rotor are located at one side of the axes ofthe shafts 11 while the ports 10 at the other end of the rotor are located at the opposite side of thel axes of the said shafts. Plates 14 are also mounted upon the shaft 6 and are provided with ports 15 which register with the ports 10 in the plates 9.

Vanes 16 are mounted upon the plates 14l As illustrated in Figs. 1, 4, 5 and 6 of the A drawings the heads at the inner ends of the casings rl are dispensed with, and the said s Two rotors 7 are operate in a horizontal position, it may be placed to operate effectually in any other position. I

The operation of the machine when used asa pump is as follows: Presuming that the shaft 6 and rotor 7 are rotated in the direction in which the surfaces 17 of the vanes 1G at the outer ends of the rotors are disposed, the liquid flows into the casing 1 through the pipe which connects with the openings 8, and is caught up by the surfaces 17 .of the vanes at the outer ends of the rotors. These vanesforcethe liquid through the ports 15 and 10 of the outermost plates into the spaces between the teeth 5 in the casing 1. At the same time the pistons 12 are carried around with the shaft 6 and the plates at the ends of the rotors 7 together with their ports are also rotated in the casing l. 1

By reason of the fact that the teeth upon the pistons mesh with the teeth upon the inner side of the casing 1, the said pistons are rotated upon their shafts 11, and the liquid is drawn through the ports behind the axis of the pistons and moves out of.

the ports which are located in advance of the axis of the pistons. That is to say, if the pist-ons are rotating in one direction, the liquid is drawn in t 1e pockets, at the ports behind the shafts 11 from the direction in which the teeth of the pistons which engage the teeth of the casing are moving, and the liquid moves out of the casing in advance of the shafts and the teeth ofthe pistons which mesh with the teeth in the casing. This action and relation o-f the teeth upon the pistons and in the casing creates proper suction to cause the liquid to move through the casing as indicated, and the 'teeth of the pistons which are located bethe liquid from flowing back through ports' through which it enters the casing.

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Should the shaft 6 be rotated in a direcl manner. Therefore it will be seen that theI pum may be operated to effectually move the liquid in either of two directions through Furthermore it will be seen that. a pum of simple structure is provided and that t e parts are peculiarly assembled and mutually coperate with each other to move the liquid at the expenditure of a minimum amount of power to rotate the shaft 6 and the parts mounted thereon.

If desired roller bearings or any other form of antifriction bearing may be employed for journals in which ythe rotating parts of the pump or piston may operate. The operation o the machine as an engine is as follows: The fluid entering the casing l, through opening 4, passes through ports 10 in plate 9 into the spaces between the teeth 5 of the casing 1 and also into the spaces between the teeth 13 of the pistons 12. Here it encounters a closed chamber because the intermeshing of the teeth 5 with the teeth 13 forms abutments between the lports 10 at one end ofthe rotor 7 and the ports 10 at the other end of said rotor 7 nowthe fluid being impinged between the stationary teeth 5 and the movable teeth 13, it will push or roll the-pistons 12 forward, thus imparting a revolving motion to the rotor 7 and its fixed shaft 6. The fluid between the teeth 5 soon encounters a port 10 at the other end of the rotor and escapes through opening 3. The fluid between the teeth 13 passes with the pistons around the periphery of the pockets 8 and also reaches a port 10 at the other end of the rotor,

opposite the inlet port 10 and finds also an outlet at opening 3. This action being continuous as the abutment formed by the intermeshing of the teeth 5 and 13 is rotating, when in operation, and the said abutment thus formed is always between an inlet port 10 at one end of the rotor and an outlet port 10 at the opposite end ofsaid rotor.

the casings.

Having described the invention what is claimed, 1s:-

1'. A rotary engine or pump comprising casings, a shaft Journaled in the casings,

rotors mounted upon the shaft, plates .lo-

cated at the ends of the rotors and havmg ports, vanes mounted upon the plates at the edges of the ports, the vanes at the opposite ends of the rotors being cppositely disposed, the casings having openings located beyond the outer ends of the rotor and having an opening located between the inner ends thereof.

2. A rotary engine or pump comprising casings, a shaft journaled in the casings, rotors mounted upon the shaft, plates carried at the ends of the rotors and having ports, vanes mounted upon the plates at the edges of the ports, the vanes at the opposite ends of the rotors being oppositely disposed and the vanes upon the corresponding ends of the rotors being oppositely disposed with relation to each other, the casings, having openings located beyond the outer ends of the rotors and an opening located between the inner ends thereof.

3. A rotary engine or pump comprising a casing havlng openings at its opposite ends and provided upon its inner side with teeth, a shaft journaled in the casing, a rotor mounted upon the shaft and provided with a periphe'ral pocket, a piston journaled in the pocket and having teeth which mesh with the teeth in the casing, plates located at the ends of the rotor and havin ports located at the ends of the piston, sai ports being out of alinement with each other longitudinal of the piston, vanes located at the edges of the ports, the vane at one end of the piston being disposed lopposite to the vane at the other end thereo In testimony whereof I aflix my signature in presence of two witnesses.

A. M. PARKINS, R. L. CowLEs. 

